Door holder



DCC' 1, 1931- D. R. LASIER ET AL 1,834,163

DOOR HOLDER Filed March 31, 1930 Patented Dec. 1, 1931 UNITED STATES l OFFICE DAVID R. LASI'ER J'AIIRS'R. HUIIE, OF cIILIcAGO, ILLINOIS, `vAssIGNORs To NORTON- LAsIER COMPANY, or orIIcAeO, ILLINOIS, A cORroRArIoN 4or ILLINOIS Y DOOR HOLDER A vApplication med MaI-cli 31, 1930. Serial No. 440,385.

This inventionrelates tovimproved holdingv means for doors,fwin'dows and similardevices which are frequently equippedwith mechanism for forcing them* to a'closing position after being opened.' In many instances,

doorsare equipped with closin and checking mechanism of acharacter toe ect ltheir c1osing movement under the controlled action of the checking device. f

io Such equipment has a wellknown and desirable `function but'fin some installationsy along ywith-the automatic-'closing action, it

is desirable to provide means which willserve to hold the door in open position until .it is desired that the same be closed. Such fholding means areV now'inwide use and areof various types and forms.v i kv 'f e 'In cases where it is desired to'hold the door open, in only one position, devices have been.

2o used which eiect a frictional binding between certain parts,rsuchfas relativelyr moving parts of the door andl door check connecting arms;

These devices produce very serviceable re-V sults in some installations and in'most instances, they arevv capable of adjustment whereby the Vsingle holding position in the arc lof swing may be 'selected.fatwi11, but they are capableof'holding the door in only ment. n l

In other instances, such as wlth doors 1n hospitals, schoolsl and "similar uses, -1t1s desirable: to provide a holding means which.

ment with'the lugs wherebythedoor. may be a heldV by any one of the lugs determining the 45 desired degreeof opening. f

nated which are occasioned in the, operation ingdevices as it is capable of` functioning 'a door holding device'of the character, de-

that single' position selected by the adjust-V fresulting in objectionable clickingor other It is this last-type ofh'oldingdevice, that the present invention. relates to, and lmore particularly, this inventionrelates to animproved construction of pawl and holding lug, whereby undesirable vnoises lare elimi- V50 of ordinary construction fof this typegof vrmechanisml u l.It 'is contemplated that this invention `he employed either with or without door check- A55 as aholder, installed in'connection with any means Vfor forcing the closing movement of the door. .Y

It is an obj ect of this invention to provide scribed, which is simple in construction and may be readily and cheaply manufactured.

It is a further object toprovide a door yholdingdevice which is simple and sure in its operation and capable of easy and accurate control.

.It is also an; object to provide a holding means which may be applied to various types of checking devices now in general'use without involving any funda-mental change in their construction'.

e .To this end,]it is a further obj ect to prouvide apawl andflug construction capable of scoope'ration inra manner. which will assure ready locking engagement and yet upon the- -I5 application oi'a slight closing force, will release by a quiet, uniformmovement Withoutv liability of snapping, jerking or other action noises.- -1 1, Y, '8" ...Theseand' .other objects. not specifically enumerated aref contemplated for this invention, as -will' readily .appear to one? skilled in VFigure 1- isfan elevational view of aldoor checkl and door arm equipped with a holding 00 V device constructed in accordance with the present invention;

Figure 2 is a'plan view of Figure 1.

Figures 3 and 4 are cross sectional views taken on the line 3 3 of Figure 2 and looking in the direction of the arrows, Fifrure 3, disclosing the holding position, and lFigure 4, disclosing an intermediate position of the mechanism in the process of release.

The accompanying drawings and the followingdescription disclose oneY preferred form of the invention, but it is the applicants intention not to have their invention limited in any respect thereby.. The scope of the in ed claims 4considered in the lightof the'illustrated embodiment and an appreciation of..

the advantages which' the invention produces therein. i

` noted that the-'inventionis illustrated in con- `nection witha door closing and checkingV fdevice, 10, buty itv is to be understood thatit islcapable of installation independentlyof a 4doorf'check Vas described' provided only that fmeans are employedrfor `exerting a closing force onthe door, together with 'a suitable fbracket or mounting for thej'holding lugs.

rPhe door vcheck here. disclosed, is designated general-ly, by the -numeral-10, and is illustrated of conventional design andv thereforewvillnot be .further described. Itxis obvious that' the holding means iscapable of installation with any type of door checking device in .connection Vwith which-*means are provided for mounting the holding lugs.

Thedevice illustrated in the drawings, comprises a door Vcheck .10, having a coverplate -.11,':covering the spring Acompartment there- -of,fand .a spindleV 11 on which the arm 13 is mounted. 1

vIt will beunderstood that the arm 13, is one of a pair ofarms of usual Ydesign, employed for connecting the door `to the ldoor iframeV .451 vvthrough-the instrumentality ofthe door closing and` checking device. Mounted'onthe fco'ver plate 11 are a plurality'of lugs 12 of` 'special constructionV hereinaftenmore fully "described The lugs.12,fmay vbe provided in yjingone from the other, that will .providefor y holding the-door inthe various open positions @desire v #In the present-illustration, the 'lugs are p formed as integral parts of the cover plate j1l1, extending. laterally therefrom at equal #angular spacing one from-.the other.

- This form is merely one #preferred yform ,60 -which gives predetermined holding positions f .to the door, but-if it'sdesired, the lugs may be'fmounted adj ustably', either collectivelyfor individually. V

I 1 Eachlug "may be independentlylmounted i, l65 by'a.similar.means, wherethe holding posivention may be determined from the append- By referring to the Vdrawings iti'will be' any suitable number and at any angular spacj ectionable clicking noise.

v'mounted' the 'paved-'22,' ali vas4 clearly shown in Figures 3 and 1l.

coil spring 23, is located in the thimble Vmember.with v.oneend bearing aga-inst the top thereof and the other end in engagement with .the head of the plunger.. It will readily appear. from this construction, that the eX- panding zactioni 'of thespring forces the plunger-*downwardlyandwhen .there is -no counter'upward force thereon, the head of `the' plunger is brought in engagement with Y the pin.19, Whichlimits its downward movement; Y

This mechanism is so positioned-on the arm V1-3, that the pawl is Alocated to pass over the series .oflugs at a height relativeV thereto to .bring the Ypavvl `in'positiocn for holdingcoop- :erationtherewith.-V K

The relative position fof parts may .be determined; from .Figures .3 and. 4, and Vit will .bexnotedl that the pivoted. pawl -is free to swing upwardly upon-engagement. with the lugs, and aireely` passt-hereover, without effect when the door is .moved'past the lugs in the opening direction. 1 v if However, when ,the :door is held in a .positionatpwhich the lower-end of the pawl is above the lug, and then'permitted Aa slight `closrng.rnovemen thefend of the pawl will vengage' the lug in the manner shown in Fig- ..ure3,:whereby the door is held.

To release the door, the 4 door is forced in a closing direction to causean upward yielding of the plunger fas shown in Figure 4, and

Vto -release fthe holding engagement.

With pawls and lugs of ordinary construction `in devices i of v this character, .it has 'been found in practice, that thev pawl after `passe ling-over ydead center in the :releasing movement, .is caused to snap suddenly, .under the' infuenoe ofthespring in the direction to .free :its engagement which results in an Vob- In the present invention, it will be noted that the `pawl is `somewhat tapered `and provided with a roundedfend 24, and the lugsare f .provided withy cooperating .rounded Vnotches The diameteroflthe notches is :slightly V'greater.than the diameterof the rounded'end' of the pawl, but it is of such depth and shape relative thereto, that engagement between the pawl and the lug is maintained until a suicient movement has been effected to practically expend the energy stored in the spring 23, while passing over dead center.

The result is that the pawl is caused to rock slowly and uniformly from holding poi sition until the arm 13 has swung past the particular holding lug, a distance suficient to permit the end of the Vlug to swing free of the cooperating notch.

It is obvious that the end of the pawltravels in an arc around the pin 21, as a center, and consequently the pawl will not be released from the notch until the arm has swung to a position to locate the pin 21 in a manner to permit the arc of swing of the end of the pawl to clear the sides of the notch. ln operation, thedoor is open to'any'holding position that is desired, at which timethe door is moved slightly past the holding'position and allowed to return to catch the pawl in the lug, as shown in Figure 3. To close the door, it is merely forced shut whereby to force the holding pawl past deady center f ait-er which the closing and checking device takes effect and brings the door quietly to a close, in the usual manner. n

1n the event that holding action is not desired, the door may be swung to open position arch, 1930.

' A DAVID R. LASIER.

JAMES P. HUME.

by causing the pawl to pass completely over the lug and fall free thereof on the opposite side whereby on the return closing movement, the pawl will ride over the lug without interference.

In th-e releasing action of the holding pawl it is obvious that the notched construction of the lugs will cause the pawl to remain in Contact therewith throughout that portion of the swing of the door through whichthe coil spring 23 is compressed by the elevated position of the plunger, and that the pawl will finally pass free of the particular lug byva Y quiet, easy motion.

le claim: Y n

1. A holding device for doors comprising two parts connected to a door and door frame, respectively, having relative movement upon opening and closing the door, the upper of` y said parts being provided with adepending pawl pivotally carried on an upwardly yieldable mounting and having a rounded end, and a lug on said other part positioned for cooperative holding engagement with said pawl, said lug having a substantially semicylindrical depression therein, of slightly larger diameter than the rounded end of said pawl, a substantial portion of the surface of said depression being determined by an arc, the radius of which is greater'than the radius of the arc determining the contour of the. end of said pawl. l n

2. A holding device for doors comprising a lug and a pawl adapted to pass thereover,

:an A 

